Microsoft Microsoft Certifications 98-366 Questions & Answers

• Question 41:

  Your home computer is having problems accessing the Internet.

  You suspect that your Internet router's DHCP service is not functioning, so you check your computer's IP address.

  Which address indicates that your router's DHCP service is NOT functioning?

  A. 169.254.1.15

  B. 172.16.1.15

  C. 192.168.1.15

  D. 10.19.1.15

  Correct Answer: A

  169.254.1.15 is an APIPA address. An APIPA address is used when the DHCP server is not available.

• Question 42:

  This question requires that you evaluate the underlined text to determine if it is correct.

  Plain old telephone service (POTS), most ISDN lines, and switched T1 lines are all examples of "Message Switching".

  Select the correct answer if the underlined text does not make the statement correct. Select 'No change is needed'' if the underlined text makes the statement correct.

  A. Circuit Switching

  B. Packet Switching

  C. FDDI Switching

  D. No change is needed

  Correct Answer: A

  *

  Examples of circuit-switched networks Public switched telephone network (PSTN) ISDN B-channel

  *

  You can get a circuit-switched T1, while frames clouds on T1s are usually packet-switched.

• Question 43:

  What are three characteristics of Ethernet network topology? (Choose three.)

  A. It uses tokens to avoid collisions on the network.

  B. It can use coaxial, twisted pair, and fiber optic media.

  C. It comprises the largest share of the networks in place today.

  D. It is a non-switching protocol.

  E. It can negotiate different transmission speeds.

  Correct Answer: BCE

  B: Ethernet networks can use coax, twisted-pair, or fibre optic cabling.

  C: Ethernet is the most widely used network topology.

  E: Speed can be negotiated on Ethernet network.

  Incorrect:

  not A: Tokes is used in ring topologies. The two possible topologies for Ethernet are bus and star.

  Not D: A network topology is not a protocol. Switching can be performed on Ethernet networks.

• Question 44:

  What are two advantages of using star topology rather than ring topology in a computer lab workgroup? (Choose two.)

  A. Failure of a central connectivity device does not bring down the entire network.

  B. A central connection point allows for flexibility and scalability.

  C. Data travels on redundant paths, so one cable cannot stop its transmission.

  D. A cable problem within the group affects two nodes, at most.

  Correct Answer: BD

• Question 45:

  An Action Center alert recommends that you enable Windows Firewall.

  After enabling the firewall, you can no longer access websites.

  Which two TCP ports should you add exceptions for on the firewall? (Choose two.)

  A. Port 21

  B. Port 23

  C. Port 25

  D. Port 80

  E. Port 443

  Correct Answer: DE

  Port 80: HTTP Port 443: HTTPS

• Question 46:

  Which wireless communication problem is caused by electromagnetic waves?

  A. Fading

  B. Attenuation

  C. Interference

  D. Diffraction

  Correct Answer: C

  Because the air is shared by all transmitters, transmissions by any device at the same frequency as an access point's radio can cause interference. Because 802.11 wireless networks operate in unlicensed bands used by many technologies, such as microwave ovens, video surveillance cameras, cordless phones, they are subject to interference.

• Question 47:

  What is an example of a network device that associates a network address with a port?

  A. Switch

  B. Router

  C. Hub

  D. DSL modem

  Correct Answer: B

  A router is a Layer 3 gateway device, meaning that it connects two or more networks and that the router operates at the network layer of the OSI model.

  Incorrect:

  not switch: Any switch that provides this 'basic' functionality, operates at the 2nd OSI layer also known as the Datalink Layer. not hub: A network hub, or a repeater, is a simple network device that does not manage any of the traffic coming

  through it. Any packet entering a port is flooded out or "repeated" on every other port, except for the port of entry.

• Question 48:

  This question requires that you evaluate the underlined text to determine if it is correct.

  "WEP" wireless encryption is the most susceptible to interception and decryption.

  Select the correct answer if the underlined text does not make the statement correct. Select 'No change is needed'' if the underlined text makes the statement correct

  A. WPA-AES

  B. WPA2

  C. WPA-PSK

  D. No change is needed

  Correct Answer: D

  Several weaknesses have been discovered using WEP encryption that allows an attacker using readily available software to crack the key within minutes.

• Question 49:

  You are home for vacation, and a family member wants your help to purchase and install network cable for a home office.

  The cable needs to support at least 300 Mbps.

  What is the least expensive option that meets this requirement?

  A. Cat3

  B. CAT5

  C. Cat5e

  D. Cat6

  Correct Answer: C

  Cat5e cables support up to 1000BASE-T (Gigabit Ethernet).

  Incorrect:

  not cat5: Max speed is 100Mbps

  not Cat6: 20% higher cost than Cat 5e.

• Question 50:

  This question requires that you evaluate the underlined text to determine if it is correct.

  Every router today is "TCP/IP" enabled, which is an industry-standard protocol that you use on the Internet and for local addressing.

  Select the correct answer if the underlined text does not make the statement correct. Select 'No change is needed" if the underlined text makes the statement correct.

  A. HTTP

  B. FTP

  C. SNMP

  D. No change is needed

  Correct Answer: D